With the kernel 4.20.8-2.gcc8092a-default the touchpad operation is acceptable. I did not quite understand what ���Edge Scrolling��� and ���Two-Finger Scrolling��� are in the touchpad settings - in both modes, scrolling works the same with one finger. Now I will test the work of the touchpad with the kernel 5.0.rc6-1.1.geb4b248-86_64 from "HEAD" repo.